Experience with Frogzskins for venting?

Anybody have any experience with using Frogzskins for venting your battery box? Seems to be an ideal solution for us.

see: https://www.amazon.com/Straightline-Performance-Frogzskin-Universal-Rectangle/dp/B003CJW8LK



Michael

I'm not quite understanding the use case that you are suggesting. Could you elaborate on what function you are seeking from this material?

cal3thousand said:

I'm not quite understanding the use case that you are suggesting. Could you elaborate on what function you are seeking from this material?

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Just to let cool air in and warm air out of the battery box. Keep in mind, this stuff is waterproof, so you could build a "sealed" box but then let the heat out without worrying about water/mud infiltration.

M

Materials that pass vapor (humidity) but seal against liquid water tend to work like 1 way traps to steadily accumulate condensation inside a device.

liveforphysics said:

Materials that pass vapor (humidity) but seal against liquid water tend to work like 1 way traps to steadily accumulate condensation inside a device.

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Perhaps in theory you are correct. But I mention this only because this technology is used extensively by snowmobilers (who know a thing or two about water in its various forms). It is also being used by scooter/moped dudes to vent their CVT transmissions. AFAIK, it would be easy to solve your concern with an inverted vent that is "out of the way" of direct water spray -- perhaps under the seat in the storage compartment.

So the answer appears to be no -- nobody has any experience with this stuff?

I certainly do not have experience with those. But in my experience with ICE motors, in general, I understand that they create vacuum all on their own, which, in this case, makes air flow through a material through which snow/water does not.

I do not see a situation in a battery that would allow air flow without some external force. Air being a poor conductor needs a flow to dissipate heat.

So, in other words, I don't think this is the type of venting that would work. But if you do find time/money to kindly test it out for the sake of ES , I'd like to know more about it.

cal3thousand said:

I certainly do not have experience with those. But in my experience with ICE motors, in general, I understand that they create vacuum all on their own, which, in this case, makes air flow through a material through which snow/water does not.

I do not see a situation in a battery that would allow air flow without some external force. Air being a poor conductor needs a flow to dissipate heat.

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The venting usage I mentioned earlier has nothing to do with the ICE motor -- these Frogzskins are being used to vent the CVT transmissions which can get exceptionally hot when pushed hard.

The concept I had was that most eBike battery packs are exposed to moving air. Add one vent in front (perhaps assisted with a scoop) and one in back and air will indeed flow -- assuming there is some space between your cells.

M